Skeleton interlocking reinforce-band for ferroconcrete construction.



J. H. MAQDOHAL'D.

SKELETON INTEELOGKING REINFORGE BAND FOE FERBOUOHGRETE CONSTRUCTION.

APPILIOATIQR FILED MAE. 7, 1919.

,; ggg Patented July 19,1910.

.Jmns n. MACDONALD, or NEW HAVEN, eounnc'rrcun SKELETON INTERLOCKING REINFDRCE- BAND FOR FERROCONCRETE CONSTRUCTION.

Specification of Letters Patent.

Patented July 19, 19MB.

'Application filed March 7, 1910. Serial No. 547,993.

the numerals of reference marked thereon,

to be a full, clear, and exact description of the same, and which said drawings constitrite part of this specification, and represent, in v Figure 1 a broken pers ective view of skeleton, interlocking rein orce bands for.

ferro-concrete work, constructed in accordance with my invention. Fig. 2 a broken view in side elevation of one of the longi tudinal bands of my improved reinforce. Fig. 3 a corresponding view of one of the transverse bands of my improved reinforce. Fig. 4. a broken view in transverse section of a sampleof concrete work reinforced in accordance with my invention.

My invention relates to an improved form of metal reinforce for ferro-concrete construction, the object being to produce at a low cost for manufacture, a reinforce of superior strength and efficiency, in the form of sheet-metal bands for use in the construction of concrete roadways and pavements, and in kindred situations.

With these ends in view my invention consists in skeleton, interlocking sheetmetal reinforce bands having certain details of construction as will be hereinafter described and pointed out in the claim.

In carrying out my invention as herein shown, I employ a plurality of vertically arranged longitudinal bands 2 made of sheetmetal and limited in length only by such practical considerations as the length of the blanks from which the bands are made, weight and convenience of handling, etc. The said bands 2 are skeletonized, as it were, by the formation in them at regular intervals on a line well below their upper edges of relatively large inverted truncated openings 3 and of triangular openings 4-. located under the opposite ends of the 0- en ings 3 and made by removing portions 0 the lower edges of the. bands. The said openings 3 and 4 result in the production of regularly spaced vertical supports 5, 1n-

clined braces or struts 6, and bases 7 into which latter the lower ends of the braces or struts 6 merge and which constitute regularly spaced points of support between the vertical supports 5. It will be understood, of course, that the concrete 8 in-its fluid or semi-fluid state flows transversely through the openings 3 and 4, which thus insure the continuity and all pervading character of the concrete. The upper edges of the bands 2 are unbroken except for upwardly opening interlocking slots 9 arranged in line with the axesof the vertical supports 5.

With the longitudinal bands 2,1employ a plurality of vertically arranged corresponding transverse bands 10 madeof sheet metal and limited in length only by the width of-the road-bed or side walk or-other construction of whatever character in which my improved reinforce may be used. The said bands 10are skelctonized in precisely the same manner as the bands 2-by being cut away to form openings 3 and 4, vertical supports 5, struts or braces 6 and bases 7. The bands 10 are also formed with-downwardly opening interlocking slots 11 longer than the slots 9 in the bands 2 and permitting the longitudinal bands 2 and transverse bands 10 to be interlocked at right angles with each other so as to produce rectangular inclosures or cells 12, having, as it were,

ierced side walls for the concrete 8 which 1s laterally tied together, as it were, by its passage through the openings 3 and 4 in the bands. As shown in'Fig. 4, the vertical supports 5 and bases 7 representing the lower edges of the bands, rest upon a suitable bed 13 prepared to receive them, while above the upper edges of the bands is a top dressing 14 also of concrete and serving as a wearing surface.

It will be seen by reference to Fig. 1, that when the bands'are interlocked the vertical supports of the longitudinal bands 2 will be combined with the vertical supports of the transverse bands 10 so as to form, .as

it were, a post having four flanges and supported by four inclined bracesv er struts, whereby great strength is secured. The in terlocking of the bands as shown by Fig. 1 results in the production of a fabric, 1f li may use the term, coextensive with the area to be concreted and consisting, as it were, of

a series of rectangular cells or inclosures.

communicating with each other through their pierced side walls and all filled with the hands improved reinforce hands interioched with each other and embedded in the concrete greatly reinforce the same. l may add that it are the term concrete in its broadest sense and with the intention or covering all of he "arions compositions of o. plastic char: e81" which are used in constructing roadways, side walks and the like. it am. aware that in the consi notion of halt psvenients intersecting hands i'iaving lower edges resnectively A unit'- them to he interlocked einployedi l am also aware that forated hands having their upper and lower slotted to them to be interlocked been employed in the construction or rames for building blocks or the cells :t'orroed by the interhe hands being designed to recement or other material on). one cell to the other before v rough the perforations in the do not, therefore, broadly claim slotted hands for asphalt construction nor nterioclring slotted bands rations tor paring construcy W particular construction of l s to entirely slreletonised so lower edges of the hands focused in part upon vertical ports which are themselves supported Toy trusses extending in four directions I claim A. sheet metal fabric for reinforcing con crete in which it is entirely embedded the said fabric consisting of sheet metal bands arranged at right angles to each other and respectively having their upper and lower edges formed with registering slots interlocked to form rectangular cells or inclesures for the reception of concrete, and the said bands being slreletonized loy the forma tion in then"; at regularly spaced inti of inverted truncated openings separo vertical supports containing the said and having theirlower ends flank-ed l3 angular openings extending under the truncated openings and cutting portions or the lower edges of the bands away, whereby the two-part Vertical supports located the intersection of the hands when inter eel-Zed are virtually supported by four inclined braces or struts extending in opposite directions and formed by the lower slde Walls of the said inverted truncated openings in testimony Whereofi l have signed specification in the presence of two snioscrihing Witnesses JAMES H lt iacll dliziilfim L. l vnnn, Gnomes Donner Sermons 

